Official Answer
Answer
Gefen gefen $Y$ (nisa daga tsagi zuwa ƙarshen shaft ko gidaje) yana da mahimmanci don hana 'bushewa'. Abun da ke tsakanin tsagi da ƙarshen dole ne ya iya jure wa juzu'i da ƙarfin lanƙwasa daga ƙaddamar da nauyin $ P $. Babban ƙa'idar babban yatsa shine $Y \ge 3 \cdot d$, inda $d$ shine zurfin tsagi. Don gidaje masu katanga, dole kuma a yi la'akari da damuwa na hoop $\sigma_h = \frac{P \cdot r}{t}$. Idan gefen gefen bai isa ba, kayan zai ba da kyauta kuma ya 'juya,' yana barin zoben ya tsere. A cikin aikace-aikacen sararin samaniya, ƙididdigar ƙayyadaddun ƙayyadaddun abubuwa (FEA) yawanci ana yin su don haɓaka girman $Y$ don adana nauyi yayin kiyaye ƙimar aminci na 1.5.
